JP2020149961A - Negative ion generator supplying ozone, positive and negative ions, or mixture thereof - Google Patents

Abstract

To provide a well-balanced system for regular cleaning, control of polluted air in a room according to the normal state, time control of the amount of generated ions, and management of externally generated ions in a negative ion generator that applies electric discharge.SOLUTION: Ions and ozone, and a mixture thereof are controlled comprehensively using means that gives an appropriate negative potential to an internal structure, fan control, photocatalyst, automatic cleaning function, and a sheet that controls ion repulsion absorption connected to the outside to obtain a long-term maintenance-free negative ion generator.SELECTED DRAWING: Figure 7

Description

The present invention improves the ion balance in the air and obtains an atmosphere equivalent to the balance in the natural world to provide a comfortable living environment, and secondarily, sterilizes and deodorizes, or improves health and constitution. With respect to the ion generator, or the ozone or both generators, to obtain the effect of.

It is known that negative ions are generated by the Lenard effect near water fields such as mountain streams and waterfalls.
On the other hand, it is known that urban areas are different and their distribution tends to be as follows.
(1) Forests and suburbs have a large amount of negative ions, and almost no positive ions are observed.
(2) There are few negative ions and many positive ions in urban areas and offices.
Especially in urban areas, there is a shortage of negative ions, and paradoxically, the effects of negative ions have been suggested, and research has been conducted in Germany and other countries since the 1910s. In recent literature, negative ions have the effects of relieving stress and anxiety, sterilizing bacteria, reducing mites, etc. In general, negative ions have a positive effect on the human body, and positive ions have an adverse effect. Against this background, various devices that improve the ion balance by supplying negative ions are provided, and there are two types, a water particle method and a discharge method. In this paper, the discharge method is referred to.

The discharge method involves the generation of ozone, and many devices generate negative ions and ozone. Ozone has sterilization, decomposition of organic substances, deodorizing ability, etc., which is almost the same as the effect of negative ions reported in the literature. For this reason, the effect of the discharge-type generating substance is not only due to negative ions but also due to ozone. Therefore, in this paper, a generator including ozone, negative ions, and a combination of both is referred to.

FIG. 1 is a specific example of the conventional example “negative ions or ozone generator that diffuses negative ions and ozone” (Patent Document 1), and solves the following two points.
1) Dust and dirt on the electrode can be easily cleaned with the removable electrode. 2) No fan is required by using ion wind. The cylindrical electrode, the needle electrode on the shaft, and the high pressure generator are used. The cylindrical electrode and the needle electrode are removable. It is a cleanable cartridge, and dust adhering to the tip of the needle electrode can be easily cleaned.

FIG. 2 is a specific example of the conventional example "air ion generator" (Patent Document 2), in which the inside of the device is charged to a negative potential and the ions are extinguished for the purpose of discharging a large amount of negative ions without extinguishing them in the middle. It is a countermeasure. Specifically, the negative ions after ionizing the input air from the fan are discharged through the case charged to the negative potential. As a result, negative ions are repelled and discharged without being adsorbed.

FIG. 3 is a specific example of the conventional example “negative ion generator” (Patent Document 3), and improves the following two points of the device that generates negative ions by discharging the cylindrical electrode and the needle electrode.
1) Use an AC power supply to prevent dust from adhering to the needle electrode.
2) A negative potential bias is applied to the counter electrode side to prevent absorption of negative ions.
Specifically, an AC high voltage is applied from the needle electrode to the cylindrical electrode. A diode is connected to the cylindrical electrode on the opposite side to a polarity that becomes a negative electrode due to a discharge current. In order to properly control this negative voltage, a discharge resistor (specified by 20 MΩ) is inserted in parallel. As a result, the generated negative ions are not absorbed by the cylindrical electrode, and almost the same is discharged to the outside.

Japanese Patent Application No. 11-236063 (Fig. 1) Japanese Patent Application No. 7-321085 (Fig. 1) Japanese Patent Application No. 2002-192965 (Figs. 1 and 2)

Patent Document 1 (Fig. 1) is characterized by a "cartridge" that can clean the needle electrode and a fanless "ion-like structure", but cleaning of this type of equipment is required approximately every month, and the following issues arise. is there.
Problem 1) The electrode cleaning period varies depending on the degree of air pollution.
Problem 2) Lint adheres to the electrodes by electrostatic force, causing a short circuit between the electrodes.
Problem 3) The amount of ion generated depends on the ion wind and is stabilized by the corona shield effect.
Problem 4) Monthly cleaning maintenance responsibilities are not realistic for home use.

In Patent Documents 2 and 3, a large amount of negative ions are discharged with the internal structure and the counter electrode as a negative potential, but there are the following problems.
Problem 5) A stable power supply that does not depend on another negative potential power supply or discharge current is required.
Problem 6) Ions are quickly adsorbed on the floor or the like after being discharged, and the amount of ions in the room cannot be secured.

In Patent Document 3 (FIG. 3), dust does not easily adhere to the electrodes of the AC power supply, and a negative potential bias due to a discharge current is applied to the counter electrode side to reduce the adsorption of negative ions, but there are the following problems.
Problem 7) The AC power supply is a transformer type and large in size, has a large current capacity, and requires short-circuit protection. Problem 8) In the AC method, positive ions, which are considered to be adverse effects, remain.
Problem 9) Since the counter electrode has a negative potential using a discharge current, it easily fluctuates due to dust or the like.

Many negative ion generators on the market show lint, dust, and dirt on the electrodes between the internal electrodes after several months of continuous operation. It prevents the dust from reaching the electrode, which causes this.
Lint and dust are blocked by a large pre-filter at the air intake port, and the accumulated amount is reduced at low speed fan rotation. Since it is different from a large displacement air purifier, the fan may rotate at a low speed. In addition, the cleaning life can be extended by providing a clock function, controlling the required amount of generation according to the time, and not performing full power operation for 24 hours.
Next, the fine particles that pass through the filter are positively and negatively charged and uncharged. Charged particles can be adsorbed by positive and negative electrodes immediately after passing through the filter. Alternatively, it can be removed by forcibly charging it negatively with a negative ion shower and then sucking it with a positive electrode or a photocatalytic filter that also serves as a positive electrode.
Many of the negative ion generators on the market have a large opening to prevent ions from being adsorbed. Since dust and pests invade through these openings, if a mesh is provided to prevent invasion and the mesh is set to a relatively low negative potential, negative ions will permeate without being adsorbed. At this time, since it is important to obtain the effect of preventing adsorption that the negative potential of the absolute potential is accurate with respect to the ground of the reference potential, a stable potential fixing means with the ground is also provided at the same time.
It is also effective to cause air vibration by the strength of the fan rotation control to purge, and it is possible to further purge by causing similar air vibration using a fan of forward and reverse rotation.

Other than the above, the electrode is contaminated by minute discharge, which is the deterioration and adhesion of the air composition, which increases the radius of curvature of the needle and affects the discharge performance. In general needle electrode discharge, the radius of curvature of the needle tip is 10 to several tens of μm, and negative ion triggers and ozone are generated by local discharge due to a local unequal electric field of 0.1 mm or less at the needle tip. For this reason, the needles need to be cleaned regularly.
As a countermeasure, first, continuous discharge is controlled, the discharge level is adjusted according to the time zone, and as a result, control for reducing the discharge accumulation time is effective. Therefore, it is also effective to attach a clock function. If operated at a substantially 50% efficiency, the life will be doubled. In this way, program operation is also a solution.
Further, the usage method in which the discharged ions are immediately extinguished and the structure in which the discharged ions are absorbed by the surface of the device can be solved by providing an electrode outside the generator to suppress the easy absorption of the ions. As a result, depending on the setting, the amount of ions emitted can be suppressed to 20% or less in the first place, so that the life is also increased by 5 times.
The tip of the needle that has finally accumulated stains needs to be removed and polished, but this can be solved by an automatic cleaning function that polishes the tip of the needle or a simple manual cleaning function that can be performed without removing it.

Conventional example 1: An ion generator with a discharge electrode as a cartridge that can be attached and detached and cleaned. Conventional example 2: An ozonizer in which the internal wind tunnel has a negative potential and ion absorption is suppressed. Conventional example 3: A negative potential is applied to the counter electrode by a discharge current to suppress ion absorption. Negative potential electrode and negative ion reflux suppress particle adsorption inside A positively charged particle adsorption electrode is added immediately after the prefilter shown in FIG. A photocatalyst for adsorbing positively charged particles was added immediately after the prefilter in FIG. With the photocatalyst of FIG. 6 as a positive potential, the particles are negatively charged and adsorbed by negative ions passing through the reflux passage. The potential of the photocatalyst in FIG. 7 is fixed to the resistance partial pressure midpoint potential of the commercial power supply. A structure that automatically cleans the needle electrode with a sliding mechanism Structure that automatically cleans the needle electrode with a rotating mechanism Structure that traps and removes fallen dust with an automatic cleaning mechanism Automatic cleaning mechanism when the discharge method is the needle electrode around the fan Image of the relationship between the amount of ions and ozone generated and the wind speed and voltage Pattern classification image of ion and ozone generation amount and wind speed / voltage Means for obtaining discharge power supply, negative potential power supply, and positive potential power supply at the same time Means to obtain discharge power supply and negative potential power supply at the same time Structure that effectively pushes out the discharged negative ions without being disturbed by the main body potential Structure in which the discharged negative ions are not disturbed by the outer potential of the main body A structure that effectively fills the room with the emitted negative ions A structure that absorbs the discharged negative ions into the human body after the charged polluted particles disappear. Structure that absorbs the discharged negative ions into the human body after removing charged polluted particles A structure that separates the discharged negative ions from charged polluted particles and absorbs them into the human body An electrode consisting of an electric wire that controls the emitted negative ions Independent sheet electrode that does not require a power supply to control the emitted negative ions An object that absorbs and repels the emitted negative ions Inexpensive manual cleaning function A structure that can be placed on the floor without restrictions on installation in high places and that negative ions reach the center of the room

First, the ground potential that is important for stabilizing the function will be described. In this proposal, the repulsion and absorption of ions are controlled by setting each part to a negative potential or a positive potential, and the potential at this time is an absolute negative potential or a positive potential with respect to the earth. As a result, it is repelled by the negative charge on the surface of the negative potential, and it becomes possible to suppress the absorption of negative ions. From the viewpoint of controlling the repulsion and absorption of ions, it is very important to secure the reference potential of the negative ion generator.
Since 3P plugs that supply the ground potential are not common in Japan, it is often difficult to secure a stable ground potential. Therefore, when the ground potential cannot be secured in this proposal, the midpoint of the AC power supply is set as the AC midpoint reference potential and used as the quasi-ground potential as shown in FIG. 4 (c). The reason why the midpoint is set is that one end of the AC power supply is grounded, and the midpoint is always stable as a quasi-ground potential with an AC of ± 50 V. For example, when a negative potential of 100 V is given, the fluctuation width of the reference quasi-ground potential is ± 50 V (± 71 V at the peak value), so if it is −142 V, a DC negative potential of at least −71 V is secured. Of course, a stable quasi-ground potential may be obtained from one end via a resistor, but since the Japanese 2P electrode plug has no polarity, it is possible to gamble either ± 100V or ground for each plug. This cannot be predicted and the fluctuation is large, so it is necessary to set a value that takes the fluctuation into consideration for the negative potential to be given. The dust trap 22 has a ground potential so that both charged particles can be adsorbed.

FIG. 4A is a basic example of the present proposal. The pre-filter 21 removes large dust, and the internal structure is used as a negative potential to repel negative ions and negatively charged particles by a negative ion shower, thereby suppressing adsorption of stains on the structure. Further, the counter electrode 18 at the discharge port can also have a mesh structure or the like because the absorption of negative ions is suppressed by the negative potential, and the invasion of dust from the discharge port is also suppressed. As a result, the income of dust that stains the electrodes in the first place can be suppressed at the water's edge, and the period of electrode cleaning can be significantly extended.
Since the prefilter 21 removes lint, the problem of lint adhering to the electrodes is solved. Further, since the rotation of the fan 7 is relatively low and the pre-filter 21 has a large area, the replacement cycle of the pre-filter 21 is also extended. Since the purpose is different from that of an air purifier that discharges a large amount of air, the rotation of the fan may be incomparably slow.
Regarding the negative potential of the internal structure including the counter electrode 18, the negative potential is applied to almost all the internal structures to which the air treatment flux including the case 8 may come into contact, and dust is applied immediately after the pre-filter 21. A trap 22 is provided. Although not shown, the fan 7 may be subjected to a negative potential by coating with a conductive resin, a conductive paint, or the like. The case 7 may have a negative potential on the inner side, and it is not necessary to have a negative potential up to the outer surface from the viewpoint of controlling the air flux inside. Therefore, a metal lining or a conductive coating may be applied to the inner surface side of the resin case.
Since the structure of the counter electrode 18 allows negative ions to pass through without being absorbed by a negative potential, it may have a mesh structure that could not be conventionally adopted for ion absorption, a porous orifice shape, or a conventional ion flow. It does not have to be a cylindrical electrode with a large opening in the passage. As a result, it is possible to prevent the invasion of dust, lint, and pests by inserting a finger or a foreign substance into the opening. Furthermore, due to the flameproof effect of the metal mesh, even if an arc is generated at a high voltage inside and the lint adhering to the inside ignites, the fire can be prevented from spreading to the outside.
If the counter electrode 18 has a cylindrical shape, ozone tends to be generated easily, and if ozone is generated at the same time, a cylindrical electrode may be used as the counter electrode 18. In this case, since there is the above-mentioned problem if there is an opening at the outlet of the cylindrical electrode, the above-mentioned negative potential mesh structure may be partially applied to the outlet.
In the direction of the needle electrode 2, discharge occurs between the needle electrode 2 and the negative potential counter electrode 18, but even without the counter electrode, discharge can occur due to the unequal electric field of the needle electrode 2, so the needle electrode 2 does not necessarily have to face the counter electrode 18. If it does not face the counter electrode 18, the amount of ozone generated can be suppressed, so if you do not want to emit ozone, that structure is adopted. For this reason, the counter electrode 18 does not necessarily have to face the needle electrode 2, but is simply a filter for preventing dust from flowing back from the discharge port, a negative potential mesh electrode as a safety measure for foreign matter insertion, or a porous electrode. It may be an orifice-shaped structure or the like.
The negative electrode DC power supply 9 supplies a negative potential to each electrode. In this example, one that can draw a low voltage from the middle is used, but a plurality of independent power supplies may be used. The counter electrode protection resistor 19 and the case electrode protection resistor 20 are for safety to prevent ignition due to the short-circuit current limitation when dust adheres, and the current capacity of the negative electrode DC power supply 9 does not have to be small.
In this example, the fan 7 is in the center, but the position of the fan 7 may be any position where the flux can be controlled.

FIG. 4B provides a recirculation passage 25 that recirculates to the prefilter 21 side from the outlet of the fan 7 of FIG. 4A. As a result, a part of the negative ions and ozone generated by the needle electrode 2 is returned to the prefilter 21 side through the reflux passage 25, and the input air 10 can be exposed to the negative ion shower immediately after inhalation. Almost all particles can be charged to a negative potential. Therefore, it is possible to more reliably prevent the positively charged particles from adhering to each structural portion inside the apparatus and being contaminated by the disappearance of the positively charged particles. As a matter of course, an additional needle electrode 2 may be provided immediately after the poor filter shown in FIG. 4A to generate negative ions, but in this case, the structure becomes complicated.
Here, since ozone is also refluxed at the same time, minute ozone always acts on the surface of the pre-filter, so that there is an effect that sterilization of each flux passage, antifungal measures, insect repellent measures, deodorization, etc. can be performed at all times.
The pre-filter 21 cannot remove fine particles such as cigarette smoke and pollen and passes through them, but the particles are rapidly negatively charged when exposed to the shower of negative ions refluxed as described above. As a result, the negatively charged particles are repelled by the negative potential needle electrode 2, the counter electrode 18, and the case 8 and are discharged as output air 11 without being adsorbed inside. Therefore, it is possible to prevent the needle electrode 2 and the counter electrode 18 from being soiled due to the adhesion of fine particles.
A HEPA filter may be used for the pre-filter 21 to absorb PM2.5 and the like, but it is not suitable as a 24-hour movable type ion generator because it generates a powerful fan and a certain amount of noise. ..
Further improvement can be achieved by using a forward / reverse rotation fan for the fan 7. That is, although it is intermittent, the pre-filter 21 is negatively charged by rotating the fan in the reverse direction at a low speed in a state where negative ions are generated, and it is possible to always maintain the negative charge by performing it periodically. It becomes. By providing the reverse rotation negative charge of the pre-filter 21, it becomes possible to capture external positively charged particles at the stage of the pre-filter 21.
The rotation speed of the fan 7 can be controlled, and by controlling this rotation speed, the amount of refluxed ions can be controlled, and the negative ion shower to the input air 10 immediately after the prefilter 21 can be controlled. Therefore, by adjusting the wind speed and the size of the return passage according to the installation environment, it is possible to prevent electrode contamination even in an environment that is moderately soiled, and the electrodes can be used in various environments. It is possible to extend the cleaning interval.
The dust trap 22 is fixed to the ground 14 and is the only portion that adsorbs negative ions. This is a function that suits the purpose. The grounding 14 may be the quasi-grounding potential from the midpoint of the AC power supply shown in FIG. 4C.

5 (a) and 5 (b) show a charged particle trap electrode 26 having a structure that allows air to pass through with a mesh or an orifice structure, which is fixed to a negative potential in front of the fan 7 of FIGS. 4 (a) and 4 (b). It is provided. As a result, when positively charged particles enter from the prefilter 21, they are absorbed here.
In this proposal, most of the internal structure and electrodes are kept at a negative potential, so positively charged particles and positive ions are positively absorbed by the negative potential, resulting in harmful pollution. As a countermeasure, the reflux passage 25 in FIG. 4B is forcibly negatively charged by applying a negative ion shower to the input air 10, but there is a part that depends on turbulence control, and it is assumed that it is insufficient. Will be done. Since the charged particle trap electrode 26 can effectively capture positively charged particles, it becomes more effective when used in combination with the reflux passage 25.
The potential of the charged particle trap electrode 26 is fixed to a negative potential in this example, but it may be grounded or a quasi-grounded potential from the midpoint of the AC power supply shown in FIG. 4C. This quasi-ground potential is a low-voltage alternating current of ± 50 V, but positively and negatively charged particles can be absorbed evenly.
Here, the positions of the fan 7 and the charged particle trap electrode 26 may be reversed.

6 (a) and 6 (b) are examples in which a conductive photocatalyst filter 28 is used instead of the charged particle trap electrode 26 in FIG. 5, and the trap electrode is not cleaned by the photocatalyst decomposition function. As the conductive photocatalyst, for example, one using a conductive substance such as silicon carbide as a base material is known. Although not shown, a photocatalyst paint may be applied to the fan and used as a photocatalyst.
The ultraviolet LED 29 is a light source for exciting the photocatalyst, and the attached pollen, cigarette smoke, and the like are decomposed and removed by the catalytic effect, so that cleaning of the photocatalyst becomes unnecessary. The positively charged particles are adsorbed on the electrode or structure to which the negative potential is applied and cause contamination. If there is a conductive photocatalyst filter 28 to which the negative potential is applied, the positively charged particles are adsorbed on the positively charged particles. Almost removed.
FIG. 6A shows no return passage 25 for negative ions generated inside. However, since the positively charged fine particles that have passed through the pre-filter 21 are absorbed and decomposed by the conductive photocatalyst filter 28 to which a negative potential is applied, most of them are absorbed and almost none of them reach the discharge electrode and adhere as stains. Further, it is not necessary to control the reflux passage 25 and the reflux of negative ions, and the structure can be simply configured. Although not shown, a photocatalyst paint may be applied to the fan 7 to serve as a photocatalyst.
FIG. 6B shows a return passage 25 for negative ions. As a result, a shower of negative ions is generated, and even if there are positively charged particles that have passed through the conductive photocatalyst filter, they are negatively charged here, so they are absorbed by the internal structural parts and discharge electrodes that have been given a negative potential. It is further suppressed and the effect is improved.

In FIG. 7, a positive potential is applied to the conductive photocatalyst filter 28 of FIG. 6, and a reflux passage 25 is provided beyond the fan 7 until immediately after the pre-filter 21. As a result, the shower of negative ions is attracted to the conductive photocatalyst filter 28, and a flow of suction is formed. Therefore, the positively charged particles that have flowed in are likely to be negatively charged, so that the conductive photocatalyst filter 28 is efficiently positively charged. It is a structure in which particles are adsorbed. In this case, a power source that supplies a positive potential is required.
The positions of the fan 7 and the conductive photocatalyst filter 28 may be reversed.
Here, since ozone is also refluxed at the same time, minute ozone always acts on the surface of the pre-filter, so that there is an effect that sterilization of each flux passage, antifungal measures, insect repellent measures, deodorization, etc. can be performed at all times.

FIG. 8 shows that the potential of the conductive photocatalyst filter of FIG. 7 is fixed not at the positive potential but at the quasi-ground potential, that is, the midpoint potential of alternating current. As a result, the particles are adsorbed regardless of the charging polarity of the invading particles.
Unlike an air purifier that discharges a large amount of air, the ion generator has a normal fan discharge rate of about 0.1 to 0.5 m / sec, and 0.2 to 1.0 cm / sec in one cycle of AC 50 Hz. Since it takes seconds, if the filter has a thickness of 2.5 cm, the polarity is changed at least 12.5 to 2.5 times while passing through the filter, and the filter is adsorbed without any problem. Although not shown, the potential of the photocatalyst may be the ground potential. The problem is that the behavior of the charged particles is uncertain when the photocatalytic potential is floating.
The positions of the fan 7 and the conductive photocatalyst filter 28 may be reversed.
Here, since ozone is also refluxed at the same time, minute ozone always acts on the surface of the pre-filter, so that there is an effect that sterilization of each flux passage, antifungal measures, insect repellent measures, deodorization, etc. can be performed at all times.

FIG. 9 is a means for automatically cleaning the needle-shaped electrode 2, which is an electrode that has a main function of generating ions. By adding a function that automatically cleans the tip of the needle electrode 2 on a regular basis, dirt that is firmly attached to the surface of the electrode is removed, and the radius of curvature due to the dirt on the needle electrode 2 that affects discharge is increased. Refresh and restore. As a result, the generation of the target ion can always be ensured.
9A is an overall image of the automatic cleaning structure, FIG. 9B is a side view of the sliding portion of the cleaning portion, and FIG. 9C is an enlarged view of the sliding portion.
Normally, the sliding spring 38 is fixed in a retracted position at a position where the electric field distribution at the tip of the needle electrode 2 is not disturbed.
At the time of automatic cleaning, as shown in FIG. 9B, the sliding spring 38 slides back and forth to scratch the vicinity of the tip of the needle electrode 2 to scrape off the stain on the surface of the needle electrode 2. ..
The sliding spring 38 has a spring property at the tip, and always has a spring force sufficient to lightly push the needle. The sliding spring back plate 39 is for providing hysteresis depending on the direction of the spring so that a force for removing stains can be obtained when pushing the sliding spring 38, whereby the front-back movement of the spring causes stains. When it is dropped, it is powerful, and when it is returned, it is lightened.
The tip of the sliding spring 38 may be fitted in a shape that guides the needle electrode as shown in FIG. 9C.
As shown in FIG. 9D, the tip of the sliding spring 38 may be configured such that two sliding springs sandwich the upper and lower parts of the needle electrode. As a result, a higher cleaning effect can be obtained by scraping off the stains on both sides of the needle electrode. Although it is a leaf spring in this figure, a combination of a normal coil spring and a leaf may be used.
The material of the member of the automatic cleaning mechanism may be metal or an insulating material as long as an electric field distribution that can obtain a normal ion discharge can be obtained at a position where the automatic cleaning mechanism is evacuated. However, the sliding rod 36 is usually made of an insulating material. The sliding spring may also be a springy insulating material such as polycarbonate.
Although it is a contact portion of the sliding spring 38 with the needle electrode 2, although not shown, for example, an abrasive made of powder such as aluminum oxide or diamond, or an equivalent polishing structure is added to the surface only at the contact portion. You may. For example, you may attach a paper file. As a result, the tip of the needle can be polished by the effect of the grindstone, so even a needle electrode whose tip is rounded by electric discharge can be restored.
This is a specific method of cleaning, but of course, it is performed in a state where ion generation is stopped and no voltage is applied. The number of slides is generally determined by the cumulative operating time. That is, 1000 hours is 10 times, 2000 hours is 20 times, and so on.
In this example, a total of four needle electrodes on the top, bottom, left, and right can be cleaned, but this is possible by providing scratches on the sliding springs on the top and bottom. Therefore, the position of the needle electrode is also important for effective automatic cleaning. As a matter of course, the number of needle electrodes may be increased.

FIG. 10 shows the same automatic cleaning mechanism, but it is a means by rotation rather than sliding. In this example, the rotary cleaning plate 39 fixed to the rotary rod 42 rotates to polish and clean the tip of the needle electrode 2. In this example, the upper and lower needle electrodes can be cleaned at the same time. If a plurality of rotary cleaning plates are attached to the rotary rod 42, the structure is such that a plurality of needle electrodes can be cleaned at one time.
FIG. 10A is a normal position. At this position, it is a condition that the electric field for discharge created by the needle electrode 2 is not disturbed.
FIG. 10B shows the electrode cleaning position at the time of cleaning, and (a) and (b) are repeated at the time of cleaning. Further, instead of the rotary cleaning plate, the rotary cleaning brush 41 as shown in FIG. 6C may be used. Although the rotating means is not shown, a rotating means such as a motor or a rotary solenoid may be used.

FIG. 11 relates to the treatment of the fallen dirt that is always associated with the automatic cleaning mechanism. It utilizes fan rotation control and dust traps. Basically, the main structure is to separate ion discharge and dust discharge based on the route that is returned by the internal fan 7 and the ion discharge route. The dust generated inside basically falls due to gravity and accumulates in the substructure inside. The accumulated dust is guided to the dust trap 22 inside by utilizing the distribution of the flow velocity by the fan 7.
In this example, a total of three dust traps 22 are provided, one at the lower part on the ion discharge port 47 side, one at the lower part in the middle of the return passage 25, and one at the lower part of the suction port 48. It may be one or two. A dust discharge port 43 is provided under each dust and the wrap 22, and as a result, the inlet of the dust trap 22 serves as a dust suction port 46. The dust sucked in by this is discharged as discharge dust 44 from each dust discharge port 43. In this example, it is left to be discharged, but it may be collected in a dust box or the like.
Since the dust trap suction port targets the dust accumulated in the lower part due to gravity, the dust suction port 46 is arranged in the lower part of each flow velocity route inside. Further, the strength and flow velocity distribution of the flow velocity created by the fan 7 and the position and size of the dust suction port 46 due to the flow velocity and wind pressure of the wall surface created by the geometric structure of the inner wall surface are determined. At this time, the size must not significantly affect the discharge amount of the ion discharge port 47, and the position must be pressurized by the flow velocity. In order to realize this, if necessary, a flow velocity introduction plate for controlling the flow velocity route, a flow velocity resistance plate, a flow velocity concentration plate, or the like may be provided, although not shown.
Here, the rotation speed and the air volume of the fan 7 may be temporarily controlled for dust discharge to assist the dust discharge function. That is, the voltage for generating ions is temporarily stopped, and the generation of ions is stopped. After that, when the above-mentioned automatic cleaning function is attached, the electrodes and the like are cleaned, but at the same time, the fan may be rotated in order to remove dust. On the other hand, if there is no function, the following control is performed. After that, the fan is intermittently rotated several times stronger than usual, and the flow velocity is changed by wind pressure vibration like a swell throughout the interior. As a result, it is possible to apply flow velocity vibration with a wind pressure stronger than usual and a swell of a weak cold, and to drop dust that has arrived at various places.
Further, it is possible to use a fan 7 having a forward / reverse rotation function if necessary. That is, the above-mentioned control is performed in the forward rotation, dust is cleaned by wind pressure vibration, and then the same control is performed in the reverse rotation. As a result, it is possible to capture spots that are geometrically directional in flow velocity and do not reach wind pressure vibration, and it is possible to clean dust more thoroughly.

FIG. 12A shows a different type of automatic cleaning function. This is an example in which the needle electrode 2 is installed on the circumference of a fan that is often used for generating ions for removing static electricity. A movable piece 49 is provided on a part of the wings of the fan 7. The movable piece 49 is attached to the fan 7 as shown in FIG. 6B, for example. In this example, the protrusion at the lower part of the movable piece 49 is used to prevent the movable piece 49 from being lost and to fix the movable part.
The movable piece 49 rises due to air resistance in the rotation direction A of the fan 7, and has a warp at its tip so as to be in close contact with the wings in the direction B. A file 50 is attached to this warped portion, and the file 50 and the tip of the needle electrode 2 rotate so as to rub against each other in a state where the movable piece stands up as shown in FIG. As a result, the needle tip is cleaned. This structure is characterized by using a fan that rotates in the forward and reverse directions. In the normal ventilation state, the movable piece 49 is in a forward rotation, and the movable piece 49 is in close contact with the fan and does not affect the needle, but when the reverse rotation is performed, the movable piece 49 rises and the needle is cleaned by the file structure of the movable piece. Is to be done.

FIG. 13 is an image of the correlation between the generation of ions and ozone due to wind speed and voltage and the voltage.
FIG. 14 is an example in which the figure is developed into a pattern and nine modes are set according to the wind speed and voltage.
Based on these, negative ions and ozone can be provided in a balance more suitable for the purpose by using the wind speed and the voltage of the electrodes as parameters. The method is described below.

According to the literature "Study on the generation and development of ions by corona discharge in the atmosphere" (2011, Sekimoto et al.), Nitrogen oxides and carbonate-based negative ions with a long life in a strong electric field, and hydroxide ions in a weak electric field. Etc. tend to increase. In addition, the ions generated by the avalanche phenomenon relax the electric field of the needle electrode, so the wind speed also affects it.
The voltage applied to the electrode determines the electric field at the tip of the needle, but the radius of curvature of the tip of the needle electrode is realistically 10 to several tens of μm, and considering the clearance of tip contamination due to electric discharge, the stable ion generation voltage is approximately 3 kV to It will be about 8 kV.
Although it is the wind speed to the electrodes, since the wind speed affects the generation of secondary ions due to the avalanche phenomenon, many discharge-type electrostatic eliminators use a predetermined wind speed means as one of the control parameters for ion generation. Accompany. Proposals have also been made to control the wind speed and concentrate the flow velocity around the needle. Even in our test, the wind speed and the amount of ions generated tend to increase in a linear approximation.

FIG. 13A is an image of the correlation between the amount of ion generated and the voltage with the wind speed as a parameter. When the corona generation voltage V0 is exceeded, the amount of ions generated increases with the voltage, and further increases when the wind speed is increased. Furthermore, a large amount of oxygen-based and NOX-based ions are generated in a voltage region larger than the corona generation voltage, and a small amount of hydroxide-based ions are generated at a small voltage.
FIG. 13B is an image of the voltage and the amount of ozone generated. Ozone is generated from the surface emission of the needle tip, only the light emitting part is selectively generated, and ozone is hardly generated due to the avalanche phenomenon (avalanche phenomenon). It is said to be "an ozone blowing mechanism using a needle-to-plate electrode system corona discharge field" (2007 Kawamoto et al.). From this, ozone is generated after a certain voltage is exceeded, and the total amount of ozone generated is simply determined by the voltage, and tends to be independent of the wind speed.
FIG. 13C is a correlation image of the generated ozone density with the wind speed as a parameter. As a matter of course, the ozone density decreases because it is diluted by increasing the wind speed.

FIG. 14 is an example in which FIG. 13 is developed into a pattern and nine modes are set according to the wind speed and voltage. Roughly based on these, it is possible to set in FIG. 14 an operation for appropriately generating ions and ozone by allocating the generation time and the like according to the target room.
From these, in this proposal, by controlling the aspect of target ions and ozone by varying the voltage and wind speed, it is possible to apply ions and ozone suitable for the purpose as follows.
FIG. 14, mode 11 (micro ions, micro ozone) is applied at night.
FIG. 14, mode 22 (medium ion, medium ozone) is applied in the daytime.
FIG. 14, mode 33 (multi-ion, multi-ozone) is an urgent limited application such as turbo mode.
FIG. 14, mode 31 (medium ion, concentrated ozone) is applied to in-equipment maintenance.
And so on.
Care must be taken when aiming at ozone. If the voltage is increased and the wind speed is reduced, dense ozone can be obtained, but this is dangerous when there are children at the outlet, and in general, the wind speed is increased to dilute the concentration. .. At this time, if negative ions are unnecessary, a positive potential electrode (not shown) may be provided inside to absorb the negative ions in advance.
As described above, according to the present proposal, since the voltage and the wind speed can be controlled, it is possible to flexibly adjust the generation of ions and ozone according to the purpose.
For example, when going out, as an outing mode, if the voltage is raised significantly to generate ozone mainly, and if ozone is generated for too long, there is a risk, so an operation such as automatic stop in 3 hours with a timer element etc. Is possible.
Even when it is urgently desired to replenish only negative ions, for example, a turbo mode or the like is provided, the amount of ozone is suppressed to a voltage slightly exceeding V0, and only the wind speed is increased.
As described above, the desired operation can be obtained by using the voltage and the wind speed as parameters without depending on the ion wind, and it is possible to use them properly according to the purpose. In this proposal, in order to effectively apply these functions, it is proposed to add a clock function as described above. As a result, it is possible to supply ions according to the living time, and it is possible to supply only the required amount of ions when needed without wasting a fixed amount of ions, and it is possible to control appropriately, resulting in electrode wear and the like. , Contributes to controlling pollution.

FIG. 15 is an example of applying the Cockcroft-Walton DC high voltage circuit to FIG. 7 with respect to the various positive and negative potential power supplies of the present invention. It is compact and has a configuration in which the potential of the target voltage is easily supplied from the middle stage, so that the potential of each part can be flexibly fixed.
The diode 51 and the capacitor 52 are elements that form a DC negative power supply circuit boosted by the Cockcroft-Walton circuit. The pulse transformer 53 and the pulse power supply 54 are power supply units for boosting the voltage. In this example, the high voltage of the negative electrode having a large number of Cockcroft stages and the power supply of a low voltage positive electrode having a relatively small number of stages are configured.
Of these, the lower negative potential can be obtained from the middle stage of the Cockcroft-Walton circuit of FIG. Positive potential can be achieved by simply adding a positive potential generation circuit in parallel with Cockcroft-Walton.

FIG. 16 is another example of the present invention formed by a Cockcroft-Walton circuit composed of only negative potentials by deleting the positive potential generation block of FIG. It is small as a power source, and a part of Cockcroft-Walton's power source can form a low-voltage negative potential power source, so it can be applied like a tap of one power source.
This makes it possible to reduce the weight and size without using a large transformer. Further, the fact that the potential of the counter electrode depends on the discharge current as in the conventional example is solved by the intermediate potential of the Cockcroft-Walton of the present invention, and stable supply is possible regardless of the discharge current.

FIG. 17 is an example of controlling the behavior of ions after ion emission, which has not been mentioned in the past. The actual ion generator did not give much consideration to adsorption, absorption, and repulsion after generating ions. However, if there is no adsorption and reabsorption of ions, it is actually sufficient to continue to discharge a small amount of ions, and measures are taken focusing on this point.
FIG. 17A shows a case where the case 8 is currently grounded. At the edge of the ion discharge port, a flow velocity is generated along the surface of the discharge port due to turbulence, and the negative ions in that part collide with the case and are absorbed and extinguished. Also, in the case of resin, depending on the state of charge on the surface, negative charge may be accumulated or absorbed positively, resulting in unpredictable and unstable behavior.
FIG. 17B shows a structure in which this measure is taken to ensure stable operation. An auxiliary repulsion electrode 55 is provided on the inner back surface of the front insulating plate 56, and a negative potential that does not affect the surface electric field of the needle electrode is applied to the auxiliary repulsion electrode 55. As described above, the counter electrode 18 is also given a negative potential so that negative ions are not absorbed, but the potential at this time has a higher negative potential than that of the front insulating plate. As a result, the electric field is uniformly formed from the needle electrode 2 → the counter electrode 8 → the auxiliary repulsion electrode 55 without changing the direction, and the negative ions are linearly directed to the auxiliary repulsion electrode 55. On the other hand, the negative ions that have passed through the auxiliary repulsion electrode 55 repel the negative potential of the auxiliary repulsion electrode 55 and are uniformly directed to the outside. Although the negative potentials of the auxiliary repulsion electrode 55 and the counter electrode 18 are changed, they may be the same.
As described in the explanation of FIG. 4, the auxiliary repulsion electrode 55 can be used as a flameproof structure having a mesh structure and also as a structure for preventing the development of a fire due to electric discharge.
FIG. 17 (c) is another example. This example is characterized in that an auxiliary repulsion electrode having a stronger negative potential that repels the inside of the discharge port is placed inside the discharge port after being accelerated by the electric field formed by the electrode and discharging negative ions. Specifically, the auxiliary repulsion electrode 55 is given a negative potential equal to or slightly lower than that of the needle electrode 2 to give a sufficient negative potential for the repulsion of negative ions. Further, the auxiliary repulsion electrode 55 is provided with an ion passage hole, and the hole diameter D is made larger than the hole diameter d of the counter electrode so that both electrodes are close to each other. As a result, the lines of electric force are in a position shielded from the discharge of the needle and do not affect the discharge by the needle. On the other hand, the attractive force of the ions that have passed the counter electrode changes to a repulsive force at the moment when the ions are exceeded, and the ions can be effectively released from the front surface of the case. This prevents ion absorption and unstable behavior in the case due to turbulent flow around the discharge port.

FIG. 18A is an example in which a conductive resin is used, the entire housing is a high-resistance conductive resin case 57, and the entire housing has a negative potential. In this case, if a large amount of charged particles to which positive ions are attached are present, they will be attached to the entire housing, which is effective in an environment where such particles do not exist.
FIG. 18B shows an example for eliminating the defect that positively or negatively charged particles are likely to adhere by applying an electric potential to the housing. Specifically, the potential of the housing is fixed to the potential of the midpoint of the AC power supply 33 via the AC midpoint resistor 34 described in FIG. As a result, the ions are repelled by the negative half wave of alternating current and absorbed by the positive half wave, but an effect of at least 50% can be obtained. In addition, since the plus and minus are balanced like the static eliminator, the potential of the housing is stable and the behavior of ions is also stable. Normally, it is often difficult to ground the housing, and it is effective to fix the potential by pseudo-grounding in this way.

FIG. 19A shows an example in which a conductive cloth 59 connected to a negative ion generator 60 and fixed at a negative potential is installed, and an ion repulsion sheet 58 whose surface is covered with a sheet-like insulator 61 is provided. The sheet-shaped insulating material 61 may be made of highly resistant conductive leather or the like so as to easily adsorb negative ions, but it is preferably one that is easy to clean because it positively adsorbs polluted particles. On the other hand, if there is too much conductivity, the negative potential will escape to the floor surface etc. and the voltage will drop, and if it is too high insulation, the surface will be charged and it will affect the ion adsorption performance, so it is said that the conductivity is moderately high resistance. It is important to. The back surface, which easily escapes electricity by touching the floor, may be made of a highly insulating material, and the front surface may be made conductive.
For example, it takes a form of supplying a negative potential such as -1 kV. As a result, negative ions generated from the main body are suppressed from being repelled and absorbed by the floor surface, and the density of ions inside the room can be maintained for a long period of time, so that the amount of ions generated from the main body is also saved. It becomes possible. In this example, it is installed on the floor, but it may be installed on a wall such as a curtain.

FIG. 19B is a structural explanatory view of the same figure. From the main body of the ion repulsion sheet 58, an arbitrary potential of a positive power supply 61, a negative power supply 62, and an AC midpoint reference potential 64 can be applied to the conductive cloth 59 by the polarity changeover switch 63. Here, the AC midpoint reference potential 64 may be grounded as long as a reliable grounding means to the ground can be obtained.
The AC midpoint reference potential 64 is treated as the quasi-ground potential already described above. First, if the potential of the conductive cloth 59 is not fixed and floats, the potential with respect to the ground becomes uncertain, which affects the absorption and repulsion of ions. Therefore, an absolute potential with respect to the ground ground, which is the reference potential, is required. In this example, the AC midpoint reference potential 64 at the midpoint of the commercial power supply 33 is treated as a stable quasi-ground potential with the potential reference. In the commercial power supply, the end of the two poles is always connected to the ground 14, but the 2P outlet plug 65 has no polarity, and the polarity changes each time depending on the connecter, so it is impossible to determine the ground. If it is a 3P plug with a ground terminal, grounding may be used, but if it is forcibly used with two poles using a two-pole conversion plug or the like, it may not be grounded and float. Risk.
Since the AC midpoint reference potential 64 is the midpoint, it has a quasi-ground potential that fluctuates according to the commercial frequency at ± 50 V, but since it is a very stable potential fixing destination that can be easily and surely obtained, it is quasi-grounded in this example. It is used as an electric potential. Therefore, the negative potential to be generated must be sufficiently high, for example, -1 kV, with respect to the quasi-ground potential of ± 50 V (± 71 V at the peak).

FIG. 19C is an explanatory diagram of control in which the polarity of the potential of the ion repulsion sheet is changed.
First, when the polarity changeover switch 63 is a negative power source and has a negative potential, it repels the negative potential of the sheet on the floor surface of the room 66 to prevent the adsorption of negative ions, and as shown on the left in the figure, the negative ions are contained in the room. Is efficiently filled, and at the same time, positively charged particles are also negatively charged. Since the absorption of negative ions is reduced, the amount of ions generated by the ion generator can be kept low. This also significantly extends the electrode fouling cycle.
Next, after the room is sufficiently filled with negative ions and the polluted particles are negatively charged, the polarity changeover switch 63 is switched to the positive electrode side, and the ion repulsion sheet is switched to the positive potential. As a result, this time, the negatively charged particles are positively attracted and absorbed. As a result, as shown on the right side of the figure, it is possible to efficiently collect pollen particles and pollen particles filled in the room to make clean air at the room level. For example, it is possible to incorporate this system into an air inlet such as a window or a ventilation port. Since the ion generator charges dust, it has the disadvantage that the surface of the article in the room becomes dirty, but this proposal provides a clear adsorption part. It is also a positive solution.
When the air cleaning effect of charging such fine particles and actively adsorbing them is performed not locally but in the entire room, the timing of control is important. First, the sheet is used as a negative potential to fill the room with negative ions by the function of preventing the adsorption of negative ions, and at the same time, the fine particles existing in the room are negatively charged. At this time, since it is important to discharge a sufficient amount of negative ions and negatively charge the particles without exception, the ion repulsion sheet 58 having a size suitable for the room and the level of its negative potential are set. After a certain period of time, the room was filled with negative ions and the fine particles were considered to be negatively charged. After that, the polarity of the ion repulsion sheet was controlled by the main body to reverse it, and this time, instead of repulsion, , It is used as an absorbent sheet and held for a certain period of time until the effect is obtained. At this time, although not shown, an external fan may be connected to the main body to control convection in the room at the same time. If necessary, it is controlled from the main body as a program that repeats these cycles several times. These operations may be automatically performed and automatically terminated in conjunction with the PM2.5 sensor or the like.
A program for concentration control and dust control, such as using an ion generator in combination with these ion repulsion sheets to periodically collect and repel dust to maintain the ion concentration, and increase the amount of ions for a certain period of time. Control operation is also possible.

FIG. 20 shows an example when the ion repulsion sheet 58 is applied to the human body.
First, as shown in FIG. 6A, the ion repulsion sheet 58 is operated in a no-voltage state. This may supply a potential such as the above-mentioned quasi-ground potential. As a result, even if negative ions are generated from the main body, the intentional behavior of the ions with respect to the human body is not performed. When negative ions are supplied for an appropriate time in this state, the positive ions existing in the air disappear, and the positively charged fine particles also become negatively charged. If a negative potential is applied to the ion repulsion sheet 58 from the beginning, positive ions and negatively charged fine particles in the air are also adsorbed on the human body, which is not preferable. Therefore, positive ions and positively charged particles are charged in this state. It waits for a while until the fine particles are negatively charged.
Next, as shown in FIG. 3B, a negative potential is supplied to the ion repulsion sheet 58. Then, by the principle of the capacitor, a negative charge becomes apparent on the surface of the human body, and negative ions and negatively charged fine particles in the air are repelled and maintained in a state of not being absorbed by the human body. This state is maintained until the negative ions are sufficiently filled and the negatively charged fine particles are considered to be adsorbed on the wall, floor, or the like.
Further, as shown in FIG. 6C, a positive potential is supplied to the ion repulsion sheet 58. As a result, a positive charge is generated on the surface of the human body, and a predetermined amount of negative ions in the air is absorbed by the human body. However, in the case of an insulated sheet, since the principle is the same as that of a capacitor, the absorption of negative ions in the human body is contained in a portion where the amount of negative ions accumulated in the human body and the capacitance of the capacitor between the ion repulsion sheets are balanced. After this, when the human body separates from the ion repulsion sheet, the absorbed charge remains as an electrification, and some static electricity remains in the human body. Therefore, only the human body contact side or the surface of the ion repulsion sheet is made of highly resistant conductive leather or the like. It is preferable to keep it.
Finally, the potential of the ion repulsion sheet is returned to the ground or the above-mentioned quasi-ground state. As a result, the electric charge accumulated in the human body after the completion is discharged.

In FIG. 21, another ion repulsion sheet 58 is added to the above-mentioned type. This is an example in which a means for further preventing the human body from absorbing charged particles and the like in the air and a function of maintaining a predetermined amount of negative ions are added.
First, as shown in FIG. 6A, in a state where negative ions are generated, a sheet to which positive ions and positively charged particles are added is set to a negative potential and absorbed.
Next, as shown in FIG. 3B, the additional sheet is used as a positive potential to actively absorb the negatively charged particles, collect the polluted particles in the air, and as a result, purify the air. ..
Further, as shown in FIG. 6C, the concentration of ions in the atmosphere is maintained by setting the additional sheet to a negative potential so that the supplied negative ions are not unnecessarily absorbed.
Finally, although not shown, all sheets are grounded or set to the above-mentioned quasi-grounding potential to prevent the human body from being charged.

FIG. 22 shows an example in which the ion repulsion sheet on the human body side is the wristband electrode 68 in FIG. The conductive wristband electrode 68 makes it possible to directly control the electric potential of the human body and move around, which is convenient. In addition, work is also possible, which increases the degree of freedom.

FIG. 23 shows the above-mentioned other ion repulsion sheet 58 composed of the ion repulsion line 69. Since it is composed of electric wires, it is easy to lay, easy to manufacture, and has the feature that the length can be freely changed. The coating of this electric wire may be composed of a high resistance conductive material. By setting this electric wire to a positive potential, a negative potential, or a quasi-ground potential, negative ions can be effectively applied to daily life. If the electric potential of the electric wire is set high, the range captured by the induction is widened, so that the effect of preventing absorption by ion repulsion can be easily obtained by crawling around the floor surface.

FIG. 24 is an example of using the guidance of a commercial power source or the like existing in the room. This can be reversed by flipping it upside down. Since the induced voltage of the negative electrode 71 and the positive electrode 72 is polarized by the diode 51, the voltage is not stable, but since it has a simple structure that does not require a power supply and maintenance, a simple ion absorption prevention sheet or It is effective as a suction sheet. The discharge resistor 70 is a discharge resistor for safety because the two electrodes form a capacitor.

As a supplement here, in order for negative ions in the natural world to affect the human body, effects and phenomena occur only when the negative ions adhere to the human body. For example, when negative ions are generated near a waterfall. Since the human body is connected to the ground with high resistance in a normal insulated state, it can be regarded as almost the ground potential, and the generated negative ions are easily absorbed by the human body at the ground potential. However, if the floor surface in an office or home, or if the human body is in a flow, the absorption of negative ions into the human body becomes unstable. In an extreme example, when the human body is in a flow, a negative potential is generated when negative ions are accumulated, and the negative ions act in a direction to avoid this. This problem has already been described in the effectiveness of providing a negative potential in order to prevent the above-mentioned absorption of ions.
However, there are few statements about the float of the human body and the charging of the human body from the viewpoint of the negative ion generator, although they are actually very important points. The proposal also refers to this very important parameter of human body flow.

FIG. 25 is an ion repulsion object 73 obtained by converting the negative ion repulsion sheet derived from FIG. 19 into an object to obtain a higher voltage. The effective range for absorbing or repelling ions may be small as long as the voltage is high, and in that case, it may be something like an ion repulsion object as in this example. For example, 10 kV, which is close to static electricity, may be used. Normally, since it is controlled in combination with the main body, it is used by connecting it with a control line (not shown), but it may be installed independently. At that time, the object may be controlled by having a power supply on the main body, or a potential may be supplied from the main body, but when a high voltage is generated, it is better to have a power supply on the object side.
The outer shell 75 of the object may be made of porcelain or the like, and in that case, it may be made of conductive porcelain, but it is preferable to have a structure having a safe high resistance value and an easy surface cleaning.
In this example, the quasi-ground potential is composed of an AC power supply 33 and a midpoint resistor, and a positive DC power supply 9 is hierarchically connected to three electrodes 74 based on the potential. In this configuration, since the lines of electric force 76 go from bottom to top, negative ions are efficiently adsorbed on the outer shell 75 of the object while being peeled from top to bottom in the direction of gravity.
In this example, the potential is positive, but it may be controlled from the main body. For example, a changeover switch inside the main body (not shown) gives a negative potential, a positive potential, a quasi-ground potential, etc. to the object to control the behavior of negative ions after discharge, which can be combined in the same manner as described above and can be performed by a plurality of objects. Is.
In addition, as a function as an object, it may have a function of being a part of the interior by illuminating it with an illumination or the like.

FIG. 26 shows an example in which the automatic cleaning function is set to a manual type in order to make it inexpensive because it would be expensive if all the mentioned functions are attached.
Manual cleaning is performed by turning the cleaning dial 78. By turning the dial, the slide cleaning rod moves left and right by the cam mechanism, and the cleaning file 82 cleans the tip of the needle electrode. A cleaning brush may be used here. For example, the cleaning promotion lamp is turned on based on the accumulation of operation time, and when the number of rotations is predeterminedly counted by the position sensor 80, the cleaning promotion lamp is turned off. Naturally, at this time, normal ion generation is stopped from one detection of the sensor.
The predetermined position of the dial is detected and managed by the sensor, secured by a lock mechanism (not shown) or the like, and further visually recognized by the reference position mark 79 of the dial. As a result, an automatic cleaning function can be realized with an inexpensive and simple configuration.

FIG. 27 is a proposal regarding wind direction control for controlling the ions discharged to the outside.
The sirocco fan 83 is newly used, and the input air dedicated to the sirocco fan of another route is introduced. As a result, the wind direction is determined inside the device by the wind effect inclined object 86 provided in the sirocco fan output unit, and a large guide stream 84 is formed when the wind is discharged to the outside.
The reason for using a sirocco fan in this example is that a strong wind force can be obtained, and a normal fan may be used as long as the purpose is achieved. By being pulled by this guide stream, the output air 11 containing negative ions is also discharged toward the upper part and far away.
As a result, the generated negative ions reach far away. Many negative ion generators do not require air volume, so even if a fan is attached, the wind stays in a breeze, and when placed on the floor, the generated ions are quickly absorbed by the floor because it is close to the floor. For this reason, there are many cases where the negative ions disappear due to a structure or the like before reaching the center of the room at the top, bottom, left, and right, but this function allows the negative ions to reach the center of the room with almost no attenuation.
On the other hand, it is also effective in diffusing ozone when it is generated into the room. In order to obtain the effect of ozone, it is necessary to fill the ozone as a whole, not locally, but this function is useful because it does not reach the corner of the room with normal air volume. It is also effective in diluting the ozone concentration by expanding sales. In addition, since it can be placed on the floor, there are no restrictions such as placing it on a dedicated table or in a high place, and it is possible to freely set it in the room.

1 Cylindrical electrode 2 Needle electrode 3 High voltage generator 4 Cartridge 5 Ozonizer 6 Ozone decomposition catalyst 7 Fan 8 Case 9 Negative electrode DC power supply 10 Input air 11 Output air 12 AC power supply 13 Transformer 14 Grounding 15 Condenser 16 Diode 17 Discharge resistance 18 Counter electrode 19 Counter electrode protection resistance 20 Case electrode protection resistance 21 Pre-filter 22 Dust trap 23 Negative ion 24 Dust collection electrode 25 Circulation passage 26 Charged particle trap electrode 27 Trap electrode protection resistance 28 Conductive photocatalyst filter 29 Ultraviolet LED
30 Positive ion 31 DC power supply (for positive potential)
32 Photocatalyst protection resistance 33 AC power supply 34 AC midpoint resistance 35 Solvent 36 Sliding rod 37 Sliding spring connecting part 38 Sliding cleaning spring 39 Sliding spring back plate 40 Rotating cleaning plate 41 Rotating cleaning brush 42 Rotating rod 43 Dust discharge Outlet 44 Discharge dust 45 Discharge dust flow 46 Dust suction port 47 Ion discharge port 48 Suction port 49 Movable piece 50 Eel 51 Diode 52 Condenser 53 Pulse transformer 54 Pulse power supply 55 Auxiliary repulsion electrode 56 Front insulating plate 57 Conductive resin case 58 Ions Repulsion sheet 59 Conductive cloth 60 Negative ion generator 61 Sheet-like insulation 62 Positive / negative power supply 63 Polarity selector switch 64 AC midpoint reference potential 65 Outlet plug 66 Room 67 Human body 68 Wristband electrode 69 Ion repulsion line 70 Discharge resistance 71 Negative electrode 72 Positive electrode 73 Ion repulsion object 74 Electrode 75 Object outer shell 76 Electric power line 77 Slide cleaning rod 78 Cleaning dial 79 Reference position mark 80 Position sensor 81 Slide cam 82 Cleaning sill 83 Sirocco fan 84 Guide stream 85 Sirocco fan Input air 86 For wind direction Inclined object

Claims (18)

Negative ions using a fan and a pre-filter using the discharge of the needle electrode, characterized in that the electrode having an ion passing structure close to the discharge port and the structure in contact with the negative ions inside have a negative potential. Generator. In claim 1, the fan is provided with a return passage to the pre-filter side, a part of the negative ions generated inside is returned to the pre-filter side, and the intake air is negatively charged by a negative ion shower. Ion generator. The negative ion generator according to claim 1 or 2, wherein an air passage electrode having a negative potential for adsorbing positively charged particles that have passed through the filter is provided immediately after the prefilter. The negative ion generator according to claim 1 or 2, wherein a negative potential conductive photocatalytic filter is provided immediately after the pre-filter. In claim 1, a unit structure is provided in which a conductive photocatalytic filter having a structure integrated with a fan is added, a reflux passage to the prefilter side is provided in the unit, and a part of negative ions generated inside is provided on the prefilter side. A negative ion generator that refluxes to, and the photocatalyst is fixed at a positive, negative, or quasi-ground potential. A negative ion generator that uses the discharge of a negative potential needle electrode, which has a structure that automatically cleans the tip of the needle electrode with a sliding cleaning spring and a sliding structure and saves it in a position that does not affect the discharge when not in use. .. A negative ion generator that uses the discharge of a negative potential needle electrode, which has a structure that automatically cleans the tip of the needle electrode with a rotary cleaning plate or a rotary cleaning brush and saves it in a position that does not affect the discharge when not in use. .. A movable piece that operates according to the wind direction is provided on a part of the fan blade, and it does not operate when rotating forward, but the movable piece operates only when the fan rotates in the reverse direction, and it is provided around the fan due to the file structure on the surface. A negative ion generator that uses the discharge of a negative potential needle electrode and has a structure for cleaning the needle electrode. As a simple automatic cleaning function, a forward / reverse rotation fan is used, and dust is cleaned in various places by air vibration due to the strength of the fan and the intermittent rotation of the forward / reverse rotation. During cleaning, ozone of an appropriate concentration is generated and slowly. A negative ion generator that utilizes the discharge of a needle electrode with a negative potential that removes germs and mold from the pre-filter and removes offensive odors by reverse rotation. By controlling the air volume and voltage, the balance between ozone and negative ions is classified into patterns, and the ozone concentration is controlled and the amount of negative ions generated is assigned according to the purpose and time zone. A negative ion generator that utilizes the discharge of a needle electrode with a negative potential. A negative ion generator that utilizes the discharge of a negative potential needle electrode that utilizes the voltage of each stage constituting the high-voltage circuit of Cockcroft Walton as the positive or negative low-voltage power supply used in claims 1 to 5. The discharge of the negative potential needle electrode is used, in which the panel of the ion discharge port is composed of an insulating material, and a negative potential ion reflector or a negative potential air passing electric plate covering up to the exhaust port is provided on the back surface thereof. Negative ion generator. Negative ions that utilize the discharge of a negative potential needle electrode, characterized in that the midpoint obtained by dividing a commercial AC power supply by a resistor is used as a stable fixed potential as a quasi-ground potential to fix the reference potential of the negative voltage. Generator. It is an externally provided electrode plate that can be controlled from the main unit and can select and set the ground potential including positive and negative potentials or quasi-ground potentials. It has at least one of the electrode plates, and each electrode potential The negative ion generator is characterized in that the total amount of ions in the room can be controlled individually and the appropriate amount of ion generation can be set on the main body side. It is a single sheet without a power supply that controls the negative ion distribution of the negative ion generator indoors, has a diode and electrode plates for both front and back sides, can be naturally charged using induced voltage, and absorbs on the front and back sides. Ion repulsion absorption sheet used in combination with a negative ion generator that allows you to select repulsion. It is attached to the negative ion generator and controlled from the main body, and the ion balance in the room is controlled by selectively setting the ground potential including the positive and negative potential or the quasi-ground potential and controlling the external ion adsorption and repulsion. , At least one attached ion absorption repulsion object. A negative ion generator that uses the discharge of a negative potential needle electrode, which has a structure that cleans the tip of the needle with a slide cleaning rod linked by a cam mechanism by manually rotating the cleaning dial. Negative potential needle electrode that has a dedicated fan that generates a guide stream that strengthens the wind direction and flow velocity of the discharged ions, and has the function of allowing ions and ozone to reach the center of the room and fill the room with the guide stream. Negative ion generator that utilizes the discharge of.

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